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首页> 外文期刊>Journal of orthopaedic science : >Logistic regression analysis of factors associated with avascular necrosis of the femoral head following femoral neck fractures in middle-aged and elderly patients.
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Logistic regression analysis of factors associated with avascular necrosis of the femoral head following femoral neck fractures in middle-aged and elderly patients.

机译：中老年人股骨颈骨折后股骨头缺血性坏死相关因素的Logistic回归分析。

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Risk factors for femoral neck fracture-induced avascular necrosis of the femoral head have not been elucidated clearly in middle-aged and elderly patients. Moreover, the high incidence of screw removal in China and its effect on the fate of the involved femoral head require statistical methods to reflect their intrinsic relationship.Ninety-nine patients older than 45?years with femoral neck fracture were treated by internal fixation between May 1999 and April 2004. Descriptive analysis, interaction analysis between associated factors, single factor logistic regression, multivariate logistic regression, and detailed interaction analysis were employed to explore potential relationships among associated factors.Avascular necrosis of the femoral head was found in 15 cases (15.2?%). Age?×?the status of implants (removal vs. maintenance) and gender?×?the timing of reduction were interactive according to two-factor interactive analysis. Age, the displacement of fractures, the quality of reduction, and the status of implants were found to be significant factors in single factor logistic regression analysis. Age, age?×?the status of implants, and the quality of reduction were found to be significant factors in multivariate logistic regression analysis. In fine interaction analysis after multivariate logistic regression analysis, implant removal was the most important risk factor for avascular necrosis in 56-to-85-year-old patients, with a risk ratio of 26.00 (95?% CI?=?3.076-219.747).The middle-aged and elderly have less incidence of avascular necrosis of the femoral head following femoral neck fractures treated by cannulated screws. The removal of cannulated screws can induce a significantly high incidence of avascular necrosis of the femoral head in elderly patients, while a high-quality reduction is helpful to reduce avascular necrosis.
机译：尚不清楚中老年患者股骨颈骨折引起的股骨头缺血性坏死的危险因素。此外，在中国螺钉拔除的高发及其对受累股骨头的命运的影响，需要统计方法来反映它们的内在联系。在5月至5月之间，对49例45岁以上的股骨颈骨折患者进行了内固定治疗。 1999年和2004年4月。采用描述性分析，相关因素之间的相互作用分析，单因素logistic回归，多元logistic回归以及详细的相互作用分析探讨相关因素之间的潜在关系。发现股骨头缺血性坏死15例（15.2） ？％）。根据两因素互动分析，年龄×植入物状态（切除与维护）和性别×减少时间是互动的。在单因素逻辑回归分析中，年龄，骨折的移位，复位的质量以及植入物的状态是重要因素。年龄，年龄×植入物的状态和复位质量是多因素logistic回归分析的重要因素。在多因素logistic回归分析之后的精细交互作用分析中，植入物去除是56岁至85岁患者发生血管坏死的最重要风险因素，风险比为26.00（95％CI == 3.076-219.747 ）。空心螺钉治疗股骨颈骨折后中老年人股骨头缺血性坏死的发生率较低。拆除空心螺钉可导致老年患者股骨头缺血性坏死的发生率很高，而高质量的复位有助于减少血管坏死。

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